Our 100% certified organic composts are made using a unique blend of organic farm-based materials, green waste fiber, and Vermicompost castings. they have been tested and approved by the national composting council and are certified organic. Compost is a great material to mix with your existing soils to ensure you keep them nutrient rich, loose, and porous. Our compost is high is carbon content for maximum water retention. This material is a great choice for vegetable and flower gardens.